Set Appliance State:

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Press and hold the reset key for 2 seconds.
Does the display revert back to show the appliance temperature ?
DISPLAY NOW SHOWS APPLIANCE TEMPERATURE
- - STILL IN DISPLAY
Note:
If a FAULT CODE appears during or after this test, then CLICK HERE